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Old 05-22-2008, 10:40 AM   #1
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Replace a service panel circuit breaker knockout?


Probably a dumb question but...

Replaced our electric hot water heater with a power vent gas model. I want to reuse the circuit the hot water heater was on to power the power vent so I don't have to run any new wires, etc (there is a junction box where the heater connected to the circuit that is perfect for a receptacle). Nothing else was on the hot water heater circuit.

The hot water heater circuit was 240 v, 2-pole breaker. The gas heater power vent needs 120 v. When I replace the 2-pole with a 1-pole (only going to be 15a) there will be an opening in the serivce panel cover plate. What do I do to cover that opening? Is something sold for this purpose, or do I have to fill the slot with what would be an unused breaker?

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Old 05-22-2008, 11:02 AM   #2
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Replace a service panel circuit breaker knockout?


Buy 2 breakers and put in a spare.

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Old 05-22-2008, 11:50 AM   #3
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Replace a service panel circuit breaker knockout?


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Buy 2 breakers and put in a spare.
Do as the JBFan says or yes, you can also get a blanking cover for your panel. They're pretty readily available.
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Old 05-22-2008, 11:51 AM   #4
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Replace a service panel circuit breaker knockout?


I would do what jbfan suggested. Blanking plates are available but must match the panel type. If your supplier doesn't have one, just buy an extra 15 or 20 amp single pole for a spare.

Jimmy, you beat me. I was typing while you were.
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Old 05-22-2008, 11:53 AM   #5
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Replace a service panel circuit breaker knockout?


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Jimmy, you beat me. I was typing while you were.
I type like a friggin' stenographer!

Now that I think of it, the idea that you and JBFan have is probably the easiest and the cost difference is minimal.
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Old 05-22-2008, 02:11 PM   #6
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Replace a service panel circuit breaker knockout?


Thanks, guys!
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Old 05-22-2008, 04:01 PM   #7
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Replace a service panel circuit breaker knockout?


Some day down the road you'll be happy you have that spare breaker!

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